Thick, strong and large sharpening stone: Made of professional-grade white corundum, perfect for large kitchen knives, provides a comfortable working area for all knife sizes, corrosion-resistant, heat-resistant, edges and corners are clearly defined Better sharpening: 400 grit sides allow for metal removal, as well as light scratches. Intermediate stage of finer grits. 1000 grit metal edge with frosted appearance. The sharpness of the edges is equivalent to the majority of factory edges on knives, . Suitable for most grinding operations: kitchen knives, hunting knives, kitchen shears, pocket knives, chef knives, razors, precision tools, gardening tools, lawn tools and ceramic knife etc Safety Guarantee with Silicone Mat: The non-slip silicone base keeps the stone firmly in place, an amazing experience without moving at all 1000 Grit Side: Grit is a very general grit. It is fine enough for many jobs and still has enough abrasions to sharpen knives and little dull. If you maintain your